sw: WW8 import: instead of control character insert '?' for footnote

SwWW8ImplReader::ReadChar() inserts a U+0002 control character to
temporarily mark a footnote anchor; this is then deleted and replaced
with a real footnote hint by SwWW8ImplReader::End_Footnote().

The assumption is that it is necessary to insert a placeholder
character to be able to apply formatting to it.

But if the document is corrupted, the control character could survive
the import, which sounds less than ideal.

So either make this magic character more explicit by documenting it in
hintids.hxx and removing any outstanding ones at the end of the import,
or use a non-offensive character instead; since this should only affect
invalid documents, choose the solution with the least effort.

Change-Id: I76d396258b32e0f0fb6393942a58a4dc57912211
Reviewed-on: https://gerrit.libreoffice.org/82760
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit 13ba765c444713b0b0b2f4b4231bdafcbbef6ad0)

1 files changed, 1 insertions, 1 deletions

diff --git a/sw/source/filter/ww8/ww8par.cxx b/sw/source/filter/ww8/ww8par.cxx
index 9fa76c88da72..5b4320c15be5 100644
--- a/sw/source/filter/ww8/ww8par.cxx
+++ b/sw/source/filter/ww8/ww8par.cxx
@@ -3727,7 +3727,7 @@ bool SwWW8ImplReader::ReadChar(long nPosCp, long nCpOfs)
             break;
         case 0x2:               // TODO: Auto-Footnote-Number, should be replaced by SwWW8ImplReader::End_Footnote later
             if (!m_aFootnoteStack.empty())
-                cInsert = 0x2;
+                cInsert = '?';
             break;
         default:
             SAL_INFO( "sw.ww8.level2", "<unknownValue val=\"" << nWCharVal << "\">" );